The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 04, 2006
Filed:
May. 19, 2004
Bindu Gupta, North Brunswick, NJ (US);
Faramarz Sabouri, Lawrenceville, NJ (US);
Vladimir Friedman, Scotch Plains, NJ (US);
Bindu Gupta, North Brunswick, NJ (US);
Faramarz Sabouri, Lawrenceville, NJ (US);
Vladimir Friedman, Scotch Plains, NJ (US);
Analog Devices, Inc., Norwood, MA (US);
Abstract
A system and method for suppressing RFI receives a differential input signal V, and a signal Vwhich varies with the common mode component of V. Vis phase-shifted and then amplified with a programmable gain Gto produce an output V. A subtractor produces an output Vwhich varies with V−V. Vis amplified with a programmable gain Gto produce an output V. An analog input signal processing circuit receives Vat an input which has an associated maximum dynamic range. A processor adjusts Gsuch that Vcovers the maximum dynamic range, adjusts the phase shift and Gto minimize V, and adjusts Gto increase Vsuch that it again covers the maximum dynamic range. The RFI in Vis substantially subtracted out, thereby enabling the full dynamic range of the analog input signal processing circuit to be employed in receiving V.